Canon imageRUNNER 2520 Series, Service Manual, Page: 83 / 402

CAUTION:
<Related Service Mode>
• PRINT > SW > 64
Setting for down sequence start temperature when feeding small size paper
<Setting value>
0: +20 deg C
1: +10 deg C
2: 0 deg C [Default: 2]
3: -10 deg C
4: -20 deg C
● Down sequence when switching paper size
Purpose:
• This down sequence prevents temperature rise of non-feeding area: there can be possible fixing offset or wrinkle of the
succeeding paper due to increased temperature of non-feeding area of the preceding paper when continuously making prints
or feeding wider length of paper than the preceding paper.
Non-feeding area
Non-feeding area
A4R
A4
F
ilm
Starting conditions:
• If the detected temperature of the sub thermistor reaches more than 210 deg C (*1) when switching to the paper which has
longer width than the preceding paper.
Operation:
• Pickup of the succeeding paper and power distribution to the heater are stopped as well to decrease the fixing temperature.
Completion conditions:
• When the detected temperature of the sub thermistor reaches 170 deg C and less (*1)
*1. It is different according to setting value of the user mode (Special mode S or Rotation/collation adjustment)
■ User mode related to fixing grade
The fixing grade is affected by some special modes in user mode which change the control temperature or productivity. The
related modes are as follows.
User mode Summary Setting value Temperature control/produc-
tivity
Special Mode N (To
prevent a curl and jam
in high humidity) The fixing mode is changed when either of
the plain/ recycled/ color/ 3-hole paper is
selected in the control panel. The produc-
tivity is reduced and fixing grade is im-
proved. Off (Default) Normal temperature control
(Plain paper mode)
Auto (Fixing grade is improved) Fixing mode (plain paper mode
and N1 mode (*1)) is changed
automatically according to the
environment (temperature/ hu-
midity).
Manual (Medium) (Fixing grade
is improved) N1 mode temperature control
Manual (High) (Fixing grade is
improved) N3 mode (*3) temperature con-
trol
2. Technical Explanation
73